Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
C.E. Barton,International Geomagnetic Reference Field:The Seventh Generation,Journal of Geomagnetism and Geoelectricity,00221392,Tokyo : Terra Scientific Pub. Co,1997,49,2・3,123-148,https://cir.nii.ac.jp/crid/1523388080305086720,